Submaximal TestsSubmaximal means the athlete works below maximum effort. In sub maximal tests, extrapolation is used to estimate maximum capacity. Examples of submaximalaerobic test are the PWC-170 test and the Queens College Step Test.

Submaximal Being less than the maximum of which an individual is capable.

Glycogen sparing does occur after caffeine ingestion (5-9mg per kg/bw) in the early stages of submaximalexercise; however this cannot be conclusively attributed to caffeine's ability elevate the fat availability for use within the skeletal muscle.

In a clinical setting, your HRmax can be tested using a stress test, usually done on a treadmill. If you are out of shape or the regular stress test cannot be administered, you can do a submaximal test to measure HR max as well.